Periodontal disease is not an absolute contraindication to orthodontic treatment, especially as there are many types of periodontal disease. In the case of clinically common gingivitis, the gingivitis can be completely normalized after better periodontal treatment, and then orthodontic treatment is not a problem at all. However, in the case of periodontitis, orthodontic treatment is extremely risky, and must be carried out under better periodontal treatment, and at the same time, it is clear that the periodontitis is no longer developing, and then orthodontic treatment is carried out. In the process of orthodontic treatment, it is necessary to maintain good periodontal hygiene and periodontal health, close observation, but due to the relatively small number of qualified hospitals and doctors, if the diagnosis of periodontitis want to orthodontic, according to the individual situation to the country’s most cutting-edge hospitals, orthodontics for periodontitis patients.